CVE-2019-15791

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Summary

CVECVE-2019-15791
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-04-24 00:15:00 UTC
Updated2020-05-01 14:55:00 UTC
DescriptionIn shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() installs an fd referencing a file from the lower filesystem without taking an additional reference to that file. After the btrfs ioctl completes this fd is closed, which then puts a reference to that file, leading to a refcount underflow.

Risk And Classification

Problem Types: CWE-191

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Canonical Ubuntu Linux 18.04 All All All
Operating System Canonical Ubuntu Linux 19.04 All All All
Operating System Canonical Ubuntu Linux 18.04 All All All
Operating System Canonical Ubuntu Linux 19.04 All All All
Operating System Linux Linux Kernel 5.0 All All All
Operating System Linux Linux Kernel 5.3 All All All
Operating System Linux Linux Kernel 5.0 All All All
Operating System Linux Linux Kernel 5.3 All All All

References

ReferenceSourceLinkTags
USN-4184-1: Linux kernel vulnerabilities | Ubuntu security notices MISC usn.ubuntu.com Third Party Advisory
USN-4183-1: Linux kernel vulnerabilities | Ubuntu security notices MISC usn.ubuntu.com Third Party Advisory
~ubuntu-kernel/ubuntu/+source/linux/+git/eoan - [no description] MISC git.launchpad.net Mailing List, Patch, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

LEGACY: Jann Horn of Google Project Zero

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